<template>
  <div class="login_container">
    <div class="login_box">
      <div class="avatar_box">
        <img src="../assets/logo.png" alt="">
      </div>
      <el-form ref="loginFormRef" :model="loginForm" :rules="loginFormRules" label-width="0px" class="login_form">
        <!-- 表单 -->
        <el-form-item prop="username">
          <el-input v-model="loginForm.username" prefix-icon="iconfont icon-user"></el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input v-model="loginForm.password" prefix-icon="iconfont icon-3702mima" type="password"></el-input>
        </el-form-item>
        <!-- 按钮 -->
        <el-form-item class="btns">
          <el-button type="primary" @click='login'>登录</el-button>
          <el-button type="info" @click='resetLoginForm'>重置</el-button>
        </el-form-item>
      </el-form>

    </div>
  </div>
</template>

<script>
  export default {
    data () {
      return {
        loginForm: {
          username: '',
          password: ''
        },
        // 验证
        loginFormRules: {
          username: [
             { required: true, message: '请输入名称', trigger: 'blur' },
             { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
          ],
          password: [
            { required: true, message: '请输入登录密码', trigger: 'blur' },
            { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
          ]
        }
      }
    },
    methods: {
      // 重置
      resetLoginForm () {
        this.$refs.loginFormRef.resetFields()
      },
      login () {
        this.$refs.loginFormRef.validate(async valid => {
          if (!valid) return
          // 解构赋值
          const { data: res } = await this.$http.post('login', this.loginForm)
          if (res.meta.status !== 200) return this.$message.error('登录失败')
          this.$message.success('登录成功')
          // 记录token
          window.sessionStorage.setItem('token', res.data.token)
          // 跳转路由
          this.$router.push('/home')
        })
      }
    }

  }
</script>

<style lang="less" scoped="">
  .login_container {
    background-color: #2b4b6b;
    height: 100%;
  }

  .login_box {
    width: 450px;
    height: 300px;
    background-color: #fff;
    border-radius: 3px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);

    .avatar_box {
      width: 130px;
      height: 130px;
      border: 1px solid #eee;
      border-radius: 50%;
      padding: 10px;
      box-shadow: 0 0 10px #ddd;
      position: absolute;
      left: 50%;
      transform: translate(-50%, -50%);
      background-color: #FFFFFF;

      img {
        width: 100%;
        height: 100%;
        border: 1px solid #eee;
        border-radius: 50%;
        background-color: #eee;
      }
    }
  }

  .login_form {
    position: absolute;
    bottom: 0;
    width: 100%;
    padding: 0 20px;
    box-sizing: border-box;
  }

  .btns {
    display: flex;
    justify-content: center;
  }
</style>
